Flexible substrate and display device

Abstract

The present disclosure provides a flexible substrate and a display device. The flexible substrate includes a flexible base substrate, and a wiring bonding structure disposed on the flexible base substrate and including a plurality of bonding leads. A filler is arranged between the bonding leads.

The invention claimed is: 
     
       1. A flexible substrate, comprising a flexible base substrate, and a wiring bonding structure disposed on the flexible substrate and comprising at least two rows of bonding wirings, wherein a filler is arranged between two adjacent rows of bonding wirings; wherein each row of bonding wirings comprises a plurality of bonding leads, the filler is further arranged between the plurality of bonding leads, the bonding leads are formed by a conductive layer on the flexible base substrate, and the filler is formed by a polyimide film at a same layer as the conductive layer; the wiring bonding structure further comprises at least two groups of dummy wirings distributed on opposite ends of the at least two rows of bonding wirings in the first direction and arranged at a same side of the flexible substrate, where the first direction is a row direction of each row of bonding wirings, the filler is further arranged between each group of dummy wirings and the at least two rows of bonding wirings, each group of dummy wirings comprises a plurality of dummy leads, the filler is further arranged between the plurality of dummy leads, an extension direction of each dummy lead is a second direction intersecting the first direction at an angle, each dummy lead is arranged in such a manner as to directly face a gap between two adjacent rows of bonding wirings in the at least two rows of bonding wirings, and a length of each dummy lead in the second direction is greater than or equal to a width of a gap between two adjacent rows of bonding wirings in the second direction. 
     
     
       2. The flexible substrate according to  claim 1 , wherein the wiring bonding structure is configured to mark positions of the opposite ends of the at least two rows of bonding wirings. 
     
     
       3. The flexible substrate according to  claim 1 , wherein the length of each dummy lead in the second direction is greater than the width of the gap between the two adjacent rows of bonding wirings in the second direction by 10 μm to 20 μm. 
     
     
       4. The flexible substrate according to  claim 1 , wherein the quantity of dummy leads in each group of dummy wirings is 3 to 10. 
     
     
       5. The flexible substrate according to  claim 4 , wherein a width of a gap between each group of dummy wirings and the at least two rows of bonding wirings is 3 to 5 times a width of a gap between two adjacent dummy leads. 
     
     
       6. The flexible substrate according to  claim 1 , wherein a thickness h of the filler on the flexible base substrate and a thickness H of each bonding lead on the flexible base substrate satisfy: h/H=(0.5-0.8). 
     
     
       7. A display panel, comprising the flexible substrate according to  claim 1 . 
     
     
       8. A display device, comprising the flexible substrate according to  claim 1 .